Dour Port-Mage + Time Walk + Shipwreck Dowser

Dour Port-Mage

Time Walk

Shipwreck Dowser

How it works

1. Cast Time Walk by paying its mana cost, causing you to take an extra turn after this one.
2. Cast Shipwreck Dowser by paying its mana cost.
3. When Shipwreck Dowser enters the battlefield, it triggers, returning Time Walk from your graveyard to your hand.
4. Move to your next turn.
5. Activate Dour Port-Mage by paying 1 and tapping it, returning Shipwreck Dowser from the battlefield to your hand.
6. Dour Port-Mage triggers, causing you to draw a card.
7. Repeat.

This loop centers around the recursive synergy between Time Walk and Shipwreck Dowser, letting you take infinite turns by constantly bringing the extra-turn spell right back to your hand as soon as the creature enters the battlefield. While Shipwreck Dowser handles the graveyard recovery, Dour Port-Mage acts as the engine's crucial safety valve and utility piece; its active ability bounces the Dowser back to your hand for reuse, and its passive triggered ability ensures you draw a card every single time the Dowser leaves the battlefield without dying. Together, these three cards lock down the game by granting you infinite turns and a continuous stream of card advantage.